Carrier for pneumatic-dispatch-tube systems



nec; 4, 1923; 1,476,070:

E. R. GIPPERT .CARRIER FOR PNEUMATICI DISPATCH TUBE SYSTEMS Filed Oct.24. 1921 y @l l, 30 l my v 7 'y 25 26 z3, J0 2/ f5 muuu@ Patented Dec,4%, i923.

' Unirse srarss` earnereine a;

ERNEST E. GIPPEET, or NEWYGEK, n. Y., essie-Non 'fonemas -nEvIoEscoli/IPANY,

INC., A onerosi-irren or NEW Yonne.

CARE-IEE EOE EnEUMeTrcmrsParCHQTUEE SYSTEMS.

.application mea october 24, i921? semaine. 59.91373@` 'To all wiz-0m'it may concern:

Ee it known that, I, ERNEST R. (timmer,

a citizen of the UnitedStates, residing Vat New `York, in' theV countyof Bronx, State of 6 Newl York, have inventedcertain new and' 'usefulmprovements in Carriers for 1Bneuv PV in:itic-Dispatch-Tnbe systems; andI do hereby declare the following to be a full, I clear, and exactdescription of the invention,

10 such as will enable others slilled'in the arti to which it appertainsto n'iake and use the saine. v This invention relates to carrierspneumatic dispatch tube systems'- and in-` volves particularly theprovision oi an inipioved iorin of buffer head for the car-- rier.

VCarriers areprovided with buffer heads niade of resilient material,usually felt, 204 which serve both to provide means against which theair pressure in the line for driv' .ing the carriers is exerted, .theheads vacting as pistons, and also to Yabsorb the shock due to impactbetween the carriers and the walls of the transit tubes when encounter4ing bends in the latter, and when striking valve doors or iaps during,-the passage ot the carrier through the transit line and its dischargetiierefroin, Furthermore, when the carrier is discharged from the linethe butter headsserve to brealrthe tall of the carriers into thedischarge receptacle.

As heretofore constructed the buffcrheads at the ends of carriershavebeen made of None piece of material, the material generallyconsisting oi? a closely compressed felt madeV in the torni or a disc`of substantial thickness, With more or less complicated ineans forfastening the butter heads permanently 4G in position. Due to wear thebuii'er heads must in time be replaced which, ivith the present forms,is a rather dithcult operation and a costly one, diie not only to thetime and labor involved in detachingfgv the butter heads from thecarrier shell, but also to the cost head might only be worn near theouter ends, whichisgenerally the case, yet the entire butter head mustbe replaced.

The present invention provides a buffer head consisting' of a pluralityof separate pieces which are superimposed one'r upon the Vother and areprovided with fastening means such that they may be seearately detachedonel from the' other and from the for l being Vlocated between thebutter head and oit material, .for Valthough the buffer .carrier shell.The weer onlibe-buffer head y isvtaken up by the outer pieceporyloiec'esrf tha-tls thepie'ce at therextreniefonter 'endsf .of the head.v Whe'n'itl becomesfnecessary,

ther'erore, to restorefthe butter head to' its 6o primary state ofeiticie'ncyit is VVonly neces` sary to detach such outerpiece or piecesfot' the head as are VWorn to an extent requiring replacement, while theinner .piece or ypieces remain kon the carrier. Since the outer 6 5vvWorn piece-er layer of the buffer head con?" v stitutes only a,fractional lpa'rtvof the entire amount ofmaterial in thel head aconsider,` able saving,l is efected in replacement, since it hasbecn'i'onnd in practice that the inner pieces or layers areV requiredtojtake so little of the Wear en the head that they re i mainsnbstantiallyintact and in good con# dition toran indefinite pe iod oftime. ln order to provide an air tight connection between the carrierand the inner vWalls of the transit tubes carriers are customarilyAfitted vv'th flexible Washers which 'are ot slightly larger diameter"thanithediameter of the buffer head and also the inside diameter of thetransit tubes. These Washers aref attached indifferent positions, in onetorni of `construction ,the Washer being. attached to the end of thebutter head and in another the shell oft thecar'rier. In the bner'headconstructed in accordance with vthis invenV tion the flexible Washerislpositioned prefer:V

ably between vtwo vof' the pieces or layersoit material comprising'`the, `buffer head-. e0'

W hen Vthe carrier is 1li-flight through fthe@ transit tubes Vtheserflexible Washers act` 'as piston rings to provide a tight connection`with. the inner Walls of the tubes thusjpreventing leakage of thepropelling currentot 95 air past the carriers. Since the Washer' is etoiameter slightly largerthan the inside diameter of the tubes, the outeredges thereof arebent backn'ardly,the Washer of one head beiner benttoward the shell of the '100' carrier and that of the-'otherhead beinbent away from vthe shell depending upon the direction ot travelandfthcposition in which the carrier is inserted in the tubes. Opposedto the bending of the washers in ardirection the reverse of thedirection of travel is the Jtorce exerted by the propelling air current`which tends to' straighten ont the curved outer edgesand maintain theWasherflatl"l The eficiency of theWa-sher as a check to i105 y thereot`is reduced to a inininiuni.

vbacking Afor the llexiblewasser consisting of a diameter suliicientlyi::ge

of -the pieces or layers of thehead hetween which theI vf'asher is held,there eieces being;

will provide a backing; on. both sides of the washer1V to support andvstillen it age-inst .curling or. bending'v in lone direction or theothe tained'inpthe present buffer head constructions as will beevident'in the case where the. washer is supported. between the butlerhead and the shell of tie carrier, in which arrangement the washerdepends for itsrsupport on one side en the shell of the carrier alsk VGO. ring,

which is oic considerably less diameter than thefbuler head; and alsoinfthecase where the washer is supported on the end of theY butler he-adin which` arrangement it is totallyV Without support on one side. Inorder to provieetor a certain 'il edoin of motion while maintaining t1t" ne our ac v of the hacking provided by the levers r the butler headinthis invention, the opposing; Vfaces of thepieces or layers, betweenwhich the washer is positioned, have rounded lperipheral edges whichprovide an annuler recess and acurved baching ior the wasl'ie'z" ineither direction. Y s y ln'the "prefer-red.construction the bull'er headis niade of two pieces or' 'layers of materia-1 an inner piece attachedto the shell of the carrier and an outer piece ysu ieriinposed upon thelinner piece and provided with fastening means whereby it may Vbequickly ydetach-ed 'for repairs or replacement. In this construction thepieces coinprising` the buffer head are of slightly larger diam* eterthan the shell orjbody or' the carrier andthe flexible washer serving asa piston 7" of larger diameter than the butler head7 isinterposedbetwe'en the pieces or layers comprising the latter.

The fastening' ineans for the separate piecesconiprising the butler headare pre-ferbly arranged for quick detachment of the outer piece bysecuring;- the latter to the devices provided 'for fastening the innerpiece to the carrier shell. This is aecon'n plished 'b v providingV ascrew ineinber or 4members for securing the inner bulle-r piece to thecarrier shell,V and preferably secured by nuts-inside of the carriershell, each screw member having; shank portion provided with a threadedsocket. The outer piece fastened in siiperirnpoeec relation to the innerpiece means oi' screws passino` through the outer piece and' whicharefadapt:

` edto enter the threaded sockets oit the screw so that Athey p Thissupport or stiflening is not iat-V ier heads and identiyingdevices setin rethe outer ends ot the hurler heads; 2 is a planview oiLL an end ofthe earrier with the numbering; device rernoved to show fastening' infor the upperpiece ol Vthe butler head:

a consists ot two t lescopingr sleeves the outer `sleevey (i andth-esinner .vl `@closed at one end as at 'ic end closure of the outersleevey 6. These secured together so as toibo e rotation s in adirection "Lsrrinfr to these drawings'the carrierY capable ot' relatilaterali ifY et the carrier, and each has a cut' away portion Vet 'inthe outer sleeve G, and l() in the inner sleeve 7, by which .the-farrier may be oilxnedV and closed when the sleeves are rotated.relative to each other in one direction or the other, as is coinrnon inthe construction oi carrier shells.

.Secures to the closed end of each of the at 8,"lhe` end ot' sleeve G,is. a head ll consisting` ol. an inner piece l. and an outer'V piecelll, each of resilient material rsuch as a closely compressed heavyY votsubstantial thickness, and each being' ii ular in forni` The disc shapepieces and lib comprising the buffer head are a diameter slightly lessthan the transit tubes of the pi'ieu'rnatic dispatch system and somewhatlarger than the diameter oi1 the shell 5 of the carrier. lnterposedbetween theinner'and outer pieces ll. and 1lb in a flexible. leatherwasherQ, the diameter oil"- which isf larger than the diameter of thebutler head ll Aand which is alsosliphtlv Y o larger thanthe diameter otthe transit tubes loa-et as a piston ringY for providing a substantiallyair tight connection between the inner walls of the transit two threadedopenings, -one for each et the screws i3, and serving `as nut forbothVscrews by which the-inner piece l1a is ti ghe i0'. 3 is a vie ralongvthe Vline 3-:73 of and Y l is a View .along the vline i-lint' lee enedagainst the, end of the' shell.' -lnterposed between the end wall 8 andthe nut 19 is a disc 2O for reeiiforcing the end wall of the carriershell by providing aldouble thickness oi metal against which the bufferhead is fastened.

The outer piece 11? of the buffer head is screws 24. The screws 2-1- Y)ass throiwh the upper piece and enterthe threaded sockets 17 inthescrewsl'?) thus providing fastening" s means by waicli the-upper piece11h-or" the bufferhead is firmly secured insu-perim- `posed relation tothe inner piece llfand to the shell ofthe carrier. The' depression 21may be fitted with aiiumbering device for.

identifying .the carriers, such as a disc of paper or other suitablematerial iinfprinted with numbers anda Celluloid protective disc 26covering the paper disc,

The outer pei'iplieialedges of the oppesed faces or surfaces 27 and 2Sof the pieces 1lb and 11Vrespectively, are rounded as 'at 2S) topiovideacurved backing `for the fle:-;.

ible disc 22 when the latter is bent backu waidly as against the innerpiece 11a, or forwardly as againstthe outer piece 11", when thev Carrieris traveling in one direction or the other, it being understood that'the flexible washer is of slightly larger diameter than that of thetransit tubes and will be flexed in one direction or the other by thewalls of the tubes depending upon lthe direction of flight of thecarrier therethrough. The rounded corners at the meeting surfaces of thepieces 11a and 11b -provide an annular recess which permits this fiexureof the washer to take place while 'at the same time providing the properamount of vstif'f'ening or backingafter the bending of the washer anamount sufficient to curve it over therounded corners, which actionresults in insuring a tight connection between the washer and thewalls'of the tubes. v

The wear on the'buifer head is taken up almost entirely by the outerpiece 11b thereofl the vinner piece 11a remaining intact and in goedcondition for an indefinite time. lVlien it becomes necessary thereforeto replace a worn bull'er head'it is unnecessary Vto substitute anentirely new head as is now the practice where the buffer consists of asingle piece of felt. Instead, the buffer head may be restored to itsprimary state of usefulness and efficiency simply by removing the upperpiece 11b, and since the latter comprises only about of the material inthe entire buffer head a substantial saving is effected vin the cost ofmaterial. Furthermore, the bearing plate or disc 22 and the screws 24:entering the sockets 17 in the screws. 13 provide quickV detachablemeans for fastening the outer piece 11b in position, thus `ed-ecting asaving intime and labor and vconseoluently in the cost; ot replacementsover the cost where single. piece buffer heads areA used.

The removal of the outer vpiece 11b is readily accomplished simply byprying open the Wireclipsl 30 holding the numbering devicef in place,`where thebuller head is provided with thelatter, removing the discs 26and 2,5fand unscrewing the screws 24: which is an extremely simpleoperation andl may be quickly performed. l Aclaim: i

1. A Vcarrier forlpneumatic dispatch tube` systems having a bufferV headat its end, said 1 buffer head consisting of a plurality of separatecircular piecesoi resilient material arranged end to end in superimposedrelation,

said pieces being of substantially the same diameter and separatelydetachable one from the other and from the carrier shell.

2. A carrier forV pneumatic dispatch tube systems having a buffer-headat itsend, said*V buffer head consisting of a plurality of sep*aiatepieces arranged in superimposed relation and separately detachableone from the other and from the carrier shell, and a ilexible washer oflarger diameter than said.

buffer head interposed between two'of said pieces.

3. A systems having a buffer head at its end, said buffer headconsisting` of a plurality of separatekpieces arranged in superimposedrelation and separately detachable one from the carrier for pneumaticdispatch tube other and from the carrier shell, and a fleXi-f" i blewasher of larger diameter than said buffer head interposed between twoof said pieces7 the opposing faces of the latter having roundedperipheral edges to `provide a curved backing for said washer whenv bentforwardly y'or baeltwardly depending upon the direction of travel yofthe carrier.

4. A carrier for pneumatic dispatch tube' systems havinga two-piecebuffer head'of resilient material consisting of an'inner piece securedto the carrier shell and a quick detachable outer piece superimposedupon said inner piece',` the said two pieces being of re-.

silient material., circular in formand having substantially the samediameter.

5. A carrier for pneumatic dispatch tube u systems having a. two-piecebuffer head consisting of aninner piece secured4 to the carrier shell, aquick-detachable outer piece superimposed upon said inner piece, and aflexible washer of larger diainet-er than the buffer he-adinterposedbetween said pieces. 6; A carrier for pneumatic dispatch tube systemshaving a two-piece buffer head consisting of an inner piece secured tothe carrier shell7 and a quick-detachable Vouter piece superimposed uponsaid inner piece, Said pieces being of larger diameter than wieV theshell of the ce1-rie1 and e flexible Washer of vlarger Vdieer-:ieerthan' tl'ie buffer heed `which fe interposed between the pieceseoinprising lhelatter. 1 7. A carrier for pneumatic dispatch Tube norounded outer peripheral edges to pro*- vide e curved beelzzinefor saidWasher when beniv forwardly o1' beokwerdly depending` upon the directionof' travel of tlieearrier.

8. A carrie-f for pneumatic dispatch ube systems having; e. two-piecebu'er head congisting of e Circuler inner piece and a circuler outerp'eee' superimposed upon Seid inner piece and of Substantially 'die Samediumeerf, devices for secr-kring` seid inner piece to the' Shell of diecarrier, and meene for 'fastening die ouier piece upon seid devices.

9; A carrier for pneumatic disgatcli tube Systems liavingg` a two-piecebulier bea-d Qonsting of n inner gieee and iin outer piece, and: eSereiv member 'for eeouru'ig sind inner piece to the carrier shellhaving a Shank portion provided iviibh n threaded socket,

seid outer piece being' provided Wireli ineenst foifzisiening it insuperimposed relaton to the inner .weee whereby Seid miier piecemay bequickly detiieliedfroin the carrier, eeicb fastening means co; iprisinge vscrew passing lifougl'iN Said outer vg'ieceand which isV adapted toentery seid tlneeded'soelet.f

1G. "1 eerrier fonpneumetie disp-(itch tube 1 syseme having itWoI-piecebufer heed ooneieiino of an mne Ypiece and an'outer piece,

with ineens 'for fee'ening'it in superniposed relation to lie innerpiece whereby the outer pieoe'inay be quickly detached from the earrier`Said i fastening ineens comprising u, sez-ew passing-2," hrough Saidouter piece and adapted fo enter seid threaded Sockets'.

ln tesinonv whereof I a'liix inv.'signedcine.u`

ERNEST GIPPERT.

Serewmembere vhaving i`

